Knowing less about computer monitors is a waste of your material

Is the merchant from Guangzhou? Fake, all refurbished goods, 15 inches with lines are only about 400 pieces, and 17 inches are only more than 600. Some time ago, I also wanted to change to an LCD, but I ran all over the second-hand market in Guangzhou.

This kind of wire is everywhere, only the circuit board is new, the screen is old, and the so-called one-year warranty is only the circuit board.

If there are 3 punctures or bright spots on either side of the diagonal, it means that there is a problem with the quality of the LCD .........

Good brother, I really admire you for daring to buy something online,

Don't know what brand of LCD monitor you have? What CRT?

If it's a Sony Trilon CRT, that's normal.

Displays that use Sony Trilon CRTs typically have such a line.

If that's the case, you can only say that you have bought something good.

Water ripples are generally caused by the graphics card, cables, the monitor itself, and the power supply.

If it's not a graphics card, the most likely thing is the display and the power supply.

1.Power supply. There are also water ripples caused by aging power supply, unstable power supply voltage, or water ripples due to excessive power consumption by components such as CPUs.

2.Display.

If there are no accessories burned out, then open the back cover to see an area covered with aluminum foil, which is the signal conversion circuit, and re-glue the aluminum foil on it and install it. (I read it on the Internet, but I haven't operated it myself).

3.Graphics. In fact, most of the water ripples are graphics card problems, sometimes it is not necessarily because of the graphics card driver, it is possible that there is something wrong with your graphics card itself, because the display of better manufacturers such as Samsung, Asus, LG and other good manufacturers actually has a low probability of failure, so it is recommended that LZ first see if there is a problem with the graphics card itself.

It's certainly not a power issue! This monitor is not worth repairing, and the new display is only a few hundred yuan!

Unplug the data cable connected to the monitor and the console, and turn on the power switch of the monitor separately. Generally, if the display is normal, it will display the manufacturer's information of the display or a prompt that the monitor is not connected, if it can be displayed normally, it indicates that the display is unlikely to be damaged.

First of all, check the most basic,Whether the data cable of the display and the motherboard are plugged in,Whether it is loose,Because your other hardware is good,Then you can only consider the problem of the motherboard,There is also the problem of the display hardware,The problem of the display yourself is so good, you can take it to repair the computer and try it,If there is no problem with the display,That is, the motherboard hangs。

There are several possibilities:

Monitor hardware failure. (Find the seller during the warranty period, and repair the TV outside the warranty period) VGA data cable failure. (Replugging or replacing the VGA cable) The graphics card is faulty. (Replace or repair your graphics card).

Memory failure. (Unplug or replace memory).

Software Issues:1Update to the latest graphics card driver or use the graphics card's built-in driver disc to reinstall the graphics card driver; 2.Reinstall the system.

It is estimated that there is a problem with the background light source or the high-voltage board circuit, or there is a problem soon.